Theoretical constraints on masses of heavy particles in Left-Right symmetric models

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• 作者：J. Chakrabortty^a ; J. Gluza^b ; ^{januszgluza@protonmail.com" class="auth_mail" title="E-mail the corresponding author} ; T. Jeliński^b ; T. Srivastava^a
• 关键词：Unitarity ; Vacuum stability ; FCNC ; RGEs ; Left-Right symmetry
• 刊名：Physics Letters B
• 出版年：2016
• 出版时间：10 August 2016
• 年：2016
• 卷：759
• 期：Complete
• 页码：361-368
• 全文大小：939 K

文摘

Left-Right symmetric models with general g_L≠g_R$g_L\ne g_R$ gauge couplings which include bidoublet and triplet scalar multiplets are studied. Possible scalar mass spectra are outlined by imposing Tree-Unitarity, and Vacuum Stability criteria and also using the bounds on neutral scalar masses M_H^FCNC$M_{{\mathrm{H}}^{\mathrm{FCNC}}}$ which assure the absence of Flavour Changing Neutral Currents (FCNC). We are focusing on mass spectra relevant for the LHC analysis, i.e., the scalar masses are around TeV scale. As all non-standard heavy particle masses are related to the vacuum expectation value (VEV) of the right-handed triplet (v_R$v_R$), the combined effects of relevant Higgs potential parameters and M_H^FCNC$M_{{\mathrm{H}}^{\mathrm{FCNC}}}$ regulate the lower limits of heavy gauge boson masses. The complete set of Renormalization Group Evolutions for all couplings are provided at the 1-loop level, including the mixing effects in the Yukawa sector. Most of the scalar couplings suffer from the Landau poles at the intermediate scale Q∼10^6.5 GeV$Q\sim {10}^{6.5}\text{GeV}$, which in general coincides with violation of the Tree-Unitarity bounds.